Jena本体类操作接口Interface OntClass
Interface that represents an ontology node characterising a
class description.
setSuperClass
void setSuperClass(Resource cls)
Assert that this class is sub-class of the given class. Any existing statements for subClassOf will be removed.
Parameters:
cls - The class that this class is a sub-class of
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
addSuperClass
void addSuperClass(Resource cls)
Add a super-class of this class.
Parameters:
cls - A class that is a super-class of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
getSuperClass
OntClass getSuperClass()
Answer a class that is the super-class of this class. If there is more than one such class, an arbitrary selection is made. If there is no such super-class, return null.
Returns:
A super-class of this class or null
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is
not supported in the current language profile. listSuperClasses
ExtendedIterator listSuperClasses()
Answer an iterator over all of the classes that are super-classes of this class. Each element of the iterator will be an OntClass.
Returns:
An iterator over the super-classes of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is
not supported in the current language profile. listSuperClasses
ExtendedIterator listSuperClasses(boolean direct)
Answer an iterator over all of the classes that are super-classes of this class. Each element of the iterator will be an OntClass.
See listSubClasses( boolean )for a full explanation of the direct
parameter.
Parameters:
direct - If true, only answer the directly adjacent classes in the super-class relation: i.e. eliminate any class for which there is
a longer route to reach that child under the super-class relation.
Returns:
an iterator over the resources representing this class's
sub-classes.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is
not supported in the current language profile.
hasSuperClass
boolean hasSuperClass(Resource cls)
Answer true if the given class is a super-class of this class.
Parameters:
cls - A class to test.
Returns:
True if the given class is a super-class of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
hasSuperClass
boolean hasSuperClass()
Answer true if this class has any super-class in the model. Note that when using a reasoner, all OWL classes have owl:Thing as a super-class.
Returns:
True if this class has any known super-class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
hasSuperClass
boolean hasSuperClass(Resource cls,
boolean direct)
Answer true if the given class is a super-class of this class. See listSubClasses( boolean ) for a full explanation of the direct
parameter.
Parameters:
cls - A class to test.
direct - If true, only search the classes that are directly adjacent to this class in the class hierarchy.
Returns:
True if the given class is a super-class of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is
not supported in the current language profile. removeSuperClass
void removeSuperClass(Resource cls)
Remove the given class from the super-classes of this class. If this statement is not true of the current model, nothing happens.
Parameters:
cls - A class to be removed from the super-classes of this class Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() class is not supported in the current language profile.
setSubClass
void setSubClass(Resource cls)
Assert that this class is super-class of the given class. Any
existing statements for subClassOf on prop will be removed.
Parameters:
cls - The class that is a sub-class of this class
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is
not supported in the current language profile.
addSubClass
void addSubClass(Resource cls)
Add a sub-class of this class.
Parameters:
cls - A class that is a sub-class of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
getSubClass
OntClass getSubClass()
Answer a class that is the sub-class of this class. If there is more than one such class, an arbitrary selection is made. If there is no such class, return null.
Returns:
A sub-class of this class or null
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
listSubClasses
ExtendedIterator listSubClasses()
Answer an iterator over all of the classes that are declared to be sub-classes of this class. Each element of the iterator will be an OntClass.
Returns:
An iterator over the sub-classes of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
listSubClasses
ExtendedIterator listSubClasses(boolean direct)
Answer an iterator over the classes that are declared to be
sub-classes of this class. Each element of the iterator will be an OntClass. The distinguishing extra parameter for this method is the
flag direct that allows some selectivity over the classes that appear in the iterator. Consider the following scenario:
:B rdfs:subClassOf :A.
:C rdfs:subClassOf :A.
:D rdfs:subClassof :C.
(so A has two sub-classes, B and C, and C has sub-class D). In a raw model, with no inference support, listing the sub-classes of A will answer B and C. In an inferencing model, rdfs:subClassOf is known to be transitive, so the sub-classes iterator will include D. The direct sub-classes are those members of the closure of the subClassOf relation, restricted to classes that cannot be reached by a longer route, i.e. the ones that are directly adjacent to the given root. Thus, the direct sub-classes of A are B and C only, and not D - even in an inferencing graph. Note that this is not the same as the entailments from the raw graph. Suppose we add to this example:
:D rdfs:subClassof :A.
Now, in the raw graph, A has sub-class C. But the direct sub-classes of A remain B and C, since there is a longer path A-C-D that means that D is not a direct sub-class of A. The assertion in the raw graph that A has sub-class D is essentially redundant, since this can be inferred from the closure of the graph.
Note: This is is a change from the behaviour of Jena 1, which took a parameter closed to compute the closure over transitivity and equivalence of sub-classes. The closure capability in Jena2 is determined by the inference engine that is wrapped with the ontology model. The direct parameter is provided to allow, for example, a level-by-level traversal of the class hierarchy, starting at some given root. Observe that in Jena 1, passing true will tend to increase the number of results returned; in Jena 2 passing true will tend to reduce the number of results.
Parameters:
direct - If true, only answer the directly adjacent classes in the sub-class relation: i.e. eliminate any class for which there is a longer route to reach that child under the sub-class relation. Returns:
an iterator over the resources representing this class's
sub-classes
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
hasSubClass
boolean hasSubClass(Resource cls)
Answer true if the given class is a sub-class of this class.
Parameters:
cls - A class to test.
Returns:
True if the given class is a sub-class of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
hasSubClass
boolean hasSubClass()
Answer true if this class has any sub-class in the model. Note that when using a reasoner, all OWL classes have owl:Nothing as a
sub-class.
Returns:
True if this class has any known sub-class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
hasSubClass
boolean hasSubClass(Resource cls,
boolean direct)
Answer true if the given class is a sub-class of this class. See listSubClasses( boolean ) for a full explanation of the direct
parameter.
Parameters:
cls - A class to test.
direct - If true, only search the classes that are directly adjacent to this class in the class hierarchy.
Returns:
True if the given class is a sub-class of this class.
Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() property is not supported in the current language profile.
removeSubClass
void removeSubClass(Resource cls)
Remove the given class from the sub-classes of this class. If this statement is not true of the current model, nothing happens.
Parameters:
cls - A class to be removed from the sub-classes of this class Throws:
OntProfileException - If the Profile.SUB_CLASS_OF() class is not supported in the current language profile.
setEquivalentClass
void setEquivalentClass(Resource cls)
Assert that the given class is equivalent to this class. Any
existing statements for equivalentClass will be removed.
Parameters:
cls - The class that this class is a equivalent to.
Throws:
OntProfileException - If the Profile.EQUIVALENT_CLASS() property is not supported in the current language profile.
addEquivalentClass
void addEquivalentClass(Resource cls)
Add a class that is equivalent to this class.
Parameters:
cls - A class that is equivalent to this class.
Throws:
OntProfileException - If the Profile.EQUIVALENT_CLASS() property is not supported in the current language profile.
getEquivalentClass
OntClass getEquivalentClass()
Answer a class that is equivalent to this class. If there is more than one such class, an arbitrary selection is made.
Returns:
A class equivalent to this class
Throws:
OntProfileException - If the Profile.EQUIVALENT_CLASS() property is not supported in the current language profile.
listEquivalentClasses
ExtendedIterator listEquivalentClasses()
Answer an iterator over all of the classes that are declared to be equivalent classes to this class. Each element of the iterator will be an OntClass.
Returns:
An iterator over the classes equivalent to this class.
Throws:
OntProfileException - If the Profile.EQUIVALENT_CLASS() property is not supported in the current language profile.
hasEquivalentClass
boolean hasEquivalentClass(Resource cls)
Answer true if the given class is equivalent to this class.
Parameters:
cls - A class to test for
Returns:
True if the given property is equivalent to this class.
Throws:
OntProfileException - If the Profile.EQUIVALENT_CLASS() property is not supported in the current language profile.
removeEquivalentClass
void removeEquivalentClass(Resource cls)
Remove the statement that this class and the given class are
equivalent. If this statement is not true of the current model, nothing happens.
Parameters:
cls - A class that may be declared to be equivalent to this class, and which is no longer equivalent
Throws:
OntProfileException - If the Profile.EQUIVALENT_CLASS()()
property is not supported in the current language profile. setDisjointWith
void setDisjointWith(Resource cls)
Assert that this class is disjoint with the given class. Any
existing statements for disjointWith will be removed.
Parameters:
cls - The property that this class is disjoint with.
Throws:
OntProfileException - If the Profile.DISJOINT_WITH() property is not supported in the current language profile.
addDisjointWith
Add a class that this class is disjoint with.
Parameters:
cls - A class that has no instances in common with this class.
Throws:
OntProfileException - If the Profile.DISJOINT_WITH() property is not supported in the current language profile.
getDisjointWith
OntClass getDisjointWith()
Answer a class with which this class is disjoint. If there is more than one such class, an arbitrary selection is made.
Returns:
A class disjoint with this class
Throws:
OntProfileException - If the Profile.DISJOINT_WITH() property is not supported in the current language profile.
listDisjointWith
ExtendedIterator listDisjointWith()
Answer an iterator over all of the classes that this class is
declared to be disjoint with. Each element of the iterator will be an OntClass.
Returns:
An iterator over the classes disjoint with this class.
Throws:
OntProfileException - If the Profile.DISJOINT_WITH() property is not supported in the current language profile.
isDisjointWith
Answer true if this class is disjoint with the given class.
Parameters:
cls - A class to test
Returns:
True if the this class is disjoint with the the given class.
Throws:
OntProfileException - If the Profile.DISJOINT_WITH() property is not supported in the current language profile.
removeDisjointWith
void removeDisjointWith(Resource cls)
Remove the statement that this class and the given class are
disjoint. If this statement is not true of the current model,
nothing happens.
Parameters:
cls - A class that may be declared to be disjoint with this class, and which is no longer disjoint
Throws:
OntProfileException - If the Profile.DISJOINT_WITH()()()property is not supported in the current language profile.
listDeclaredProperties
ExtendedIterator listDeclaredProperties()
Answer an iteration of the properties associated with a frame-like view of this class. Note that many cases of determining whether a property is associated with a class depends on RDFS or OWL reasoning.
This method may therefore return complete results only in models that have an attached reasoner. See the RDF frames how-to for full details.
Returns:
An iteration of the properties that are associated with this class by their domain.
listDeclaredProperties
ExtendedIterator listDeclaredProperties(boolean direct)
Answer an iteration of the properties associated with a frame-like view of this class. Note that many cases of determining whether a property is associated with a class depends on RDFS or OWL reasoning.
This method may therefore return complete results only in models that have an attached reasoner. See the RDF frames how-to for full details.
Parameters:
direct - If true, restrict the properties returned to those directly associated with this class.
Returns:
An iteration of the properties that are associated with this class by their domain.
hasDeclaredProperty
boolean hasDeclaredProperty(Property p,
boolean direct)
Answer true if the given property is one of the declared properties of this class. For details, see listDeclaredProperties(boolean).
Parameters:
p - A property to test
direct - If true, only direct associations between classes and
properties are considered
Returns:
True if p is one of the declared properties of this class listInstances
ExtendedIterator listInstances()
Answer an iterator over the individuals in the model that have this class among their types. Equivalent to listInstances(boolean)with an argument false.
Returns:
An iterator over those instances that have this class as one of the classes to which they belong
listInstances
ExtendedIterator listInstances(boolean direct)
Answer an iterator over the individuals in the model that have this class among their types, optionally excluding sub-classes of this class.
Parameters:
direct - If true, only direct instances are counted (i.e. not
instances of sub-classes of this class)
Returns:
An iterator over those instances that have this class as one of the classes to which they belong
createIndividual
Individual createIndividual()
Answer a new individual that has this class as its rdf:type
Returns:
A new anonymous individual that is an instance of this class createIndividual
Individual createIndividual(https://www.doczj.com/doc/e64283608.html,ng.String uri)
Answer a new individual that has this class as its rdf:type
Parameters:
uri - The URI of the new individual
Returns:
A new named individual that is an instance of this class
dropIndividual
void dropIndividual(Resource individual)
Remove the given individual from the set of instances that are
members of this class. This is effectively equivalent to the
Individual.removeOntClass(com.hp.hpl.jena.rdf.model.Resource)
method, but invoked via the class resource rather than via the
individual resource.
Parameters:
individual - A resource denoting an individual that is no longer to be a member of this class
isHierarchyRoot
boolean isHierarchyRoot()
Answer true if this class is one of the roots of the local class hierarchy. This will be true if either (i) this class has owl:Thing (or daml:Thing) as a direct super-class, or (ii) it has no declared super-classes (including anonymous class expressions).
Returns:
True if this class is the root of the class hierarchy in the model it is attached to
asEnumeratedClass
EnumeratedClass asEnumeratedClass()
Answer a view of this class as an enumerated class
Returns:
This class, but viewed as an EnumeratedClass facet
Throws:
ConversionException - if the class cannot be converted to an
enumerated class given the language profile and the current state of the underlying model.
asUnionClass
UnionClass asUnionClass()
Answer a view of this class as a union class
Returns:
This class, but viewed as a UnionClass facet
Throws:
ConversionException - if the class cannot be converted to a union class given the language profile and the current state of the
underlying model.
asIntersectionClass
IntersectionClass asIntersectionClass()
Answer a view of this class as an intersection class
Returns:
This class, but viewed as an IntersectionClass facet
Throws:
ConversionException - if the class cannot be converted to an
intersection class given the language profile and the current state of the underlying model.
asComplementClass
ComplementClass asComplementClass()
Answer a view of this class as a complement class
Returns:
This class, but viewed as a ComplementClass facet
Throws:
ConversionException - if the class cannot be converted to a
complement class given the language profile and the current state of the underlying model.
asRestriction
Restriction asRestriction()
Answer a view of this class as a restriction class expression
Returns:
This class, but viewed as a Restriction facet
Throws:
ConversionException - if the class cannot be converted to a
restriction given the language profile and the current state of the underlying model.
isEnumeratedClass
boolean isEnumeratedClass()
Answer true if this class is an enumerated class expression
Returns:
True if this is an enumerated class expression
isUnionClass
boolean isUnionClass()
Answer true if this class is a union class expression
Returns:
True if this is a union class expression
isIntersectionClass
boolean isIntersectionClass()
Answer true if this class is an intersection class expression
Returns:
True if this is an intersection class expression
isComplementClass
boolean isComplementClass()
Answer true if this class is a complement class expression
Returns:
True if this is a complement class expression
isRestriction
boolean isRestriction()
Answer true if this class is a property restriction
Returns:
True if this is a restriction
convertToEnumeratedClass
EnumeratedClass convertToEnumeratedClass(RDFList individuals)
Answer a view of this class as an enumeration of the given
individuals.
Parameters:
individuals - A list of the individuals that will comprise the
permitted values of this class converted to an enumeration
Returns:
This ontology class, converted to an enumeration of the given
individuals
convertToIntersectionClass
IntersectionClass convertToIntersectionClass(RDFList classes) Answer a view of this class as an intersection of the given classes.
Parameters:
classes - A list of the classes that will comprise the operands of the intersection
Returns:
This ontology class, converted to an intersection of the given
classes
convertToUnionClass
UnionClass convertToUnionClass(RDFList classes)
Answer a view of this class as a union of the given classes.
Parameters:
classes - A list of the classes that will comprise the operands of the union
Returns:
This ontology class, converted to an union of the given classes convertToComplementClass
ComplementClass convertToComplementClass(Resource cls)
Answer a view of this class as an complement of the given class.
Parameters:
cls - An ontology class that will be operand of the complement Returns:
This ontology class, converted to an complement of the given class convertToRestriction
Restriction convertToRestriction(Property prop)
Answer a view of this class as an restriction on the given property.
Parameters:
prop - A property this is the subject of a property restriction class expression
Returns:
This ontology class, converted to a restriction on the given property